Engraving-machine



I (No Model.) 3 Sheets-Sheet 2.

J. H. REINHARDT. ENGRAVING MACHINE.

No. 539,544. Patented May 21, 1895.

Inventor.- Way BMW Jag.

(No Model.) 3 Sheets8heet a.

J. H. REINHARDT.

' ENGRAVING MACHINE.

' No. 539,544. Patented May 21, 1895.

. 'jnventor:

UNITED STATES,

PATENT OFFICE.

ENGRAVlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 539,544, dated May 21, 1 895.

Application filed January 15,1894. Serial No. 496,853- on; model.)

To all whom it may concern.-

Be it known that I, JAMES H. REINHARDT, of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Engraving-Machines; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompany- 1ng drawings, and to the letters of reference marked thereon, making a part of this specification.

The object of this invention is to produce an improved machine for the rapid and accurate routing of dies, stamps and the like which are ordinarily cut by hand at considerable expense and with much trouble, particularly where a figure is to be produced in fac-simile, as in the cutting of blocks for autograph signatures. The improved machine which I have devised for this purpose comprises a suitable tool, means for driving or actuating the tool for cutting or routing the material operated upon, and a frame in which the tool is supported and by means of which it may be moved at the will of the engraver to follow the lines of the figure to be reproduced.

The improved construction and arrangement of the several instrumentalities employed will be set forth herein and the particular features wherein the invention consists will be pointed out in the claims.

In the drawings, Figure 1 is a plan view of the improved engraving-machine, partly broken away. Fig. 2 is a side elevation of the same, also partly broken away. Fig. 3 is a detail view of the work-holder and carriage, in section, on the line at m of Fig. 1. Fig. 4' is a section on the line y y of Fig. 1, and Fig. 5 is a vertical central section of the tool-motor on a scale larger than that of the remaining figures.

In the drawings a suitable bed-plate is represented at A as adapted to support the other parts of the machine and as having ways A, A, upon which certain portions of the machine are adjustable. At one end of the bedplate is erected a post B for a purpose hereinafter referred to, and near the same end is a stud 0 upon whichthesupporting frame hereinafter referred to is pivoted; The stud is provided with a fixed collar 0 and below the collar it is. screw-threaded, as indicated at O to permit of its vertical adjustment with respect to the bed-plate by rotation of a nut 0 r r 1 Upon the stud O are pivoted two arms D, D, of a pantograph frame which supports the cutting or routing tool, as hereinafter described. The outer ends of the arms D,D', are supported by adjustable links B, B, from the upper end of the post B. To the outer end of the arm D is pivoted the third arm D of the pantograph which has fixed thereto an adjustable leg D having a roller-foot D to rest upon a table E and so support the weight of the arm D While permitting its free movement. The outer end of the arm D has a suitable handle D by which the frame may be moved as desired, and near the free end of the arm is supported a tracer D which is adapted to follow the lines of any pattern which is placed beneath it and which is to be reproduced by the tool. The tracerD is composed of a rod 01 to which a suitable pointer 01' is adj ustably secured and which is itself moved vertically through the arm D and is connected to a spring-pressed .lever or finger-piece d by means of which the point of the tracer can be raised readily and quickly from the pattern when required, by the pressure of a finger of the same hand that grasps the handle D Upon the arms D D of the pantograph frame are mounted slides F, E, which may be held in any desired position by set screwsf, f, and to which are pivotally connected the ends of the fourth arm D which completes the pantograph frame and which carries the tool. As represented in the drawings the arm D is composed of suitable end-pieces d d and four rods 01 which support the carriage G for the tool, the said carriage G being adjustable to any desired position upon the arm D The cutting or routing tool H is borne by the carriage G and is moved in a horizontal plane as determined by the movements of the tracer D", the amplitude of its movements be ing determined by the adjustment of the carriage Gwith respect to the pantograph frame. The tool is also made vertically adjustable with respect to its carriage, to take up wear, in a manner hereinafter described, and the whole pantograph frame with the tool carriage may be raised or lowered as required, by adjusting the stud C, the foot D and the supporting links B, B, according to the nature of the work to be done. The tool is actuated directly by a small electric motor I mounted upon the carriage G. The spindle J of the motor is made hollow and the shaft which carries the tool is extended therethrough and has rotatably secured at its upper end a sleeve or nut h which is threaded to engage a sleeve fixed to the spindle J, whereby the tool may be adjusted vertically as desired. The motor may be driven from any suitable source of power and mighthave the conducting wires connected directly thereto. I prefer, however, to fix two bare conducting strips or rods K, K, to the arm D upon which rest contact shoes connected re spectively to the coils of the motor, a switch L being interposed in the connection for convenience in stopping and starting the tool. The conducting strips may be connected at one end by suitable wires K, K, with the source of power.

The work, that is, the-plate or whatever else it may be which is to be cut or engraved, must be held firmly in a suitable holder which must be capable of adjustment according to the various adjustments of the tool with respect to the fixed pivot of the pantograph, and should also be capable of vertical adjustment with respect to the point of the tool so that the depth of the engraving or routing may be regulated and so that the point of application of the tool may be transposed from one portion of the work to another. For this purpose the work holder N, which may be of any suitable form to receive and hold the work, a

a fastening device being indicated at N, is mounted to move vertically on a carriage O, the latter being movable horizontally on the ways A, A. A shaft P is mounted in bearings in the carriage O and has fixed thereto a cam P upon which the holder N rests, a pin n being fixed to the holder and entering. a cam groove 19 to keep the holder against the cam. The shaft P may be rotated through a worm-wheel P fixed thereon and a wormQ on a short shaft Q which is also supported in the carriage O and has a suitable handleQ An adjustable stop R is provided for limiting the vertical movement of the holder, and, as shown, may consist of a collar R held adjustably on theshaft P and carrying an arm R to strike against a suitable stop. The arm may be adjusted for different piecesof work to permit them to be brought to the proper level. A projection 72 on the holder N bears an adjusting screw n in the path of the arm R to limit its movement, whereby the position of the work-holder may be regulated with great nicety.

The mode of operation of my machine will be readily understood. The block engraved or out having been placed in its holder, the proper adjustment of the work carriage and of the pantograph having been secured and the motor having been set in operation, the handle D is grasped by the engraver and the tracer D is caused to follow the lines of the pattern placed beneath it. The tool will follow the movements of the tracer on a reduced scale and being suitably formed for the purpose, will rout away the material of the block to form a die or stamp and will reproduce exactly, though in reduced size, the figure of the pattern. For all ordinary purposes in cutting dies, stamps, seals and other like articles this machine may be used at great economy of time and expense.

I claim as my invention 1. The combination of a pantograph frame,

a carriage adjustable upon an arm of said frame, an electric motor borne by said carriage, said motor having a hollow spindle, a tool carrying shaft extended through said spindle, a sleeve adj ustably secured at the upper end of said shaft and threaded to engage a sleeve fixed to said spindle, whereby the tool may be adjusted vertically, a tracer carried by said frame, and a work holder, substantially as shown and described.

2. The combination of a bed-plate, a carriage adjustable horizontally on said bedplate, a work holder adjustable vertically in said carriage, a shaft supported in bearings on said carriage, acam fixed to said shaft and engaging said work holder, an arm mounted on said shaft, and a stop fixed in the path of said arm whereby the movement of said shaft,

' cam and holder may be limited, substantially as shown and described.

3. The combination of a bed-plate, a car riage adjustable horizontally on said bedplate, a work holder adjustable vertically in said carriage, a shaft supported in bearings 1 on said carriage, a cam fixed to said shaft and j engaging said work holder, a collar adjustable on said shaft, an arm fixed to said collar, and ;a stop fixed in the path of said arm whereby ]the movement of said shaft, cam and holder may be limited, substantially as shown and described.

4:. The combination of a bed-plate, a carriage adjustable horizontally on said bedplate, a Work holder adjustable vertically in said carriage, a shaft supported in bearings 1 on said carriage, a cam fixed to said shaft and 5 engaging said work holder, an arm mounted onsaid shaft, a projection on theholder and an adjusting screw carriedby said projection in the path of said arm, whereby the move- 'ment of said shaft, cam and holder may be limited, substantially as shown and described.

IIO

5. The combination ofapantograph frame, In testimony whereof I have signed my a routing tool carried by said frame, means name to this specification in the presence of to for actuating said tool, a tracer carried by an two subscribing witnesses. arm of said frame and Vertically movable 5 through said arm, a spring-pressed lever to JAMES H. REINHARDT.

which said tracer is connected, a handle fixed Witnesses: v to said arm, and a work holder, substantially A. N. J ESBERA,

as shown and described. A. WIDDER. 

